Incandescent-electric-lamp socket.



C. H. BISSELL.

INCANDESCENT ELECTRIC LAMP SOCKET.

APPLICATION HLED JUNE 22.1911.

1 ,250,1 29. Patented Dec. 18,1917.

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WITNESSES 3 I Z ENTOR.

GEM

section.-

' one of the lamp contact terminals being also nca'nen filed Jilllfi 22 1 '0 all icko'mit may concern? This invt'sntionhas forits object the prodnction of an incandescent"electric lamp soel tet which is particularly simple in construchon',"economical in mai'iufa'ctnre and highlyellie'ient and du'rahlc in use; and it consists in the combinations my co'n'struc-' tions hereinafter set forth and claimed.

In'descrihing this invention reference is had to the accompanying drawings'in which like characters designate corresponding parts in all the views.

vFigure 1 is an elevation of my lamp socket, the casing therefor being shown in F'g. 2 is another elevation thereof, the casing being removed; I Figs. 3 and 4 are, respectively, a vertical sectional vieWjand an inverted plan of the lamp socket, the casing being removed, and

removed in Fig. 4. Figs. 5 andfi are, re

vditional parts being also shown Figs. 7 and 8"are, respectiiely, opposing recess, wire terminals and lamp. contact terminals carri ylocated in the recess, I 1 I 2 r 1791 and 4 are the W1 base; and 5 a'nd 6 are-th'elamp conta et ter minals. p

The seetion'l of the base 'is formed with a recess 8 opening through its face opposed to the section 2, the recess being here shown V Spec ification oi Letters Pa ent spee t'ively; an ele'vaf tion and a plan of the base of the socket ad Fig. 9 is an elevation of the section shown descent electric soc ket a base "having two sec p I 7 formed with: a recess, openingthro'ugh the end face there 'of opposed to th'e other section, and such other section servingfasa closure for the;{

d ;byi"fche. h els; n a Sw v re terminals carried by'the 7 isthe casing o f the lamp socket.

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. e or NEW YORK, Na Y.., A CORPORATION. or NEW YClRK:

; rammed Dec-18,1917. ,"191'1." seriai'nbgeefiss,

" nsane"openin -'through diametrically oppositesidesof the section '1 and as having 'ine""end' enlarged 'as 'shown at 9, Figs. 5 antl 'f. j i 4 r-z The sectionQ as aclosure for the recess 8 and the sectionsl and 2 arej'provided, respectively, with-slots and projection's entering the slots, the slots lObeing forin'ed inthe section 1' on opposite sides of "the re c' ss 8 and opening through opposite "side walls of the recess; one of the vslots openin; through the side face of said section 1 and face-of said section -1 opposedto the section '2; and the projections 11 are provided on the section Q-and fit into the slots lO.

opposed tothe recess"8'and having an inelined' bottom 12, said 'recess opening entirely through the section 2 atone end forming a passage 13 for exposing'the lampcon tact'terniinal' 5 to the switch'in the recess 8. 'The lamp contact terminal 5 "'is the 'tlSllill threaded shcll or sleeve having a flange 14 which engages the base of the socket and is exposed to the switch through said passage.

ypair ofscreivslh extending lengthwise of the base andthroughthe flange 14' of the sleeve terminalfi, openings 16 in thes'ection 2 andip n'i'ngs 17 offthe section 1; said "screws 15 threading into 'n'utsdo cated in non-circular recesses 18 in the upper face "of the section 1-.

; The iv'tet'erminal 3'is located in alengthivi'se'peripher-al groove" 19 extending lengthw se-er the section 1 of the base and is formed With'a lateral'ektension 2O lying in 'roovein theinner end wall of the lateral ension Q'ofthe recessS, and said terminal is held in position by a screw 21"extending ,l e'ngtt'ivvi'se'otthe section 1' from the upper endithereof and threading 'into said "ex- "tension 20. v v J o a v The other vvire terminal 4 is, located in a peripheral groove 22, Fig. 2,"'extending lengthwise of the section 1, and isformcd with neend looped a'glat 23', the end of the looped portion extcndingin a rigiiiangle to the major part of the terminal and engaging the end wall of said groove in pa- 'Thc section'2 is also formed with a recess.

The {sections 1, 2' are'h'eld together by a' both .of theslot's opening through theiend sition to receive a screw 24 extendinglengthwise of the section 1 from the upper -end thereof, the screw 24 threading into the end of the looped portion 23 of the wire terminal.

4. The wire terminal 4' is formed with an integral extension which constitutes the centhe recess 8 and its enlargement 9 open, so

that the pattern for the section 1, which is usually insulating material cast into a mold, can be easily drawn from the sand.

25, 2b are respectively the opposing arms of the switch located in'the recess 8, the arms being fixed at corresponding ends and having their other ends movable respectively into and out of contact with the wire terminal 3 and the flange 14 of the lamp contact terminal 5.

The arm 26 hasits end portion 27 bent backwardly into a position opposed to and spaced apart from the major part of such arm 26 so that said portion 27 moves through the passage 13 into and out of contact with the flange 14 of the sleeve terminal 5. Owing to said'portion 27- the arm 26 is of maximum length and resiliency.

The arm 25 is provided with an angular extension 28 at its ends, said extension extending toward'the arm 25 and terminating in a contact piece movable into and out of engagement with a portion of the Wire terminal 3. Owing to the angular extension 28, the arm 26 is of maximum resiliency and the switch can be confined in a recess 18 of minimum depth.

The end portion 27 of the arm 26 and the end portion 28 of the arm 25 .include parts arranged at substantially a right angle to the arms 25, 26 and parts extending in directions parallel to the major parts of said armsf' the parallel portion of the arm 25 extending in a direction opposite to that in which the parallel portion 27 of the arm 26 extends.

Preferably the arms 25 and 26 are bent,

from a'single strip of metal, the intermediate portion of which is pressed together and engaged with walls of the recess, and the end of the pressed portion is bent at an angle forming an angular lug 29 for engaging the bottom wall of the recess 8 and a wall meeting the bottom at an angle, Fig. 3. The lug receives a fastening screw 30 extending through the section 1 from the upper end thereofthrough the lug 29 and into the nut 31.

32 is the shank of the key for the switch, the shank being mounted in bearings formed in the opposing faces of .the sections 1, 2 and on opposite sides of the recess 8 so that upon the detaching or Lllt: separation of the sections 1 and 2, the key can be easily removed. As here shown the bearings are alined grooves 33 formed in the end walls of the slots 10, and the shank 32 is held in the bearings by the projections 11.

'34 is a cam mounted on the shank within the recess 8 between the arms 25, 2G and operating to separate the arms to cause them to make contact with the wire terminal 3 and the sleeve terminal 5 when the shank is turned in one direction, and permitting said arms to'break'contact when the shank is turned in the opposite direction.

hat I claim is:

1. An incandescent electric lamp socket comprising a base. wire terminals and lamp contact terminals carried by the base, the base having two sections. one of the sections being formed with a recess opening through an end face thereof and the other section serving as a closure for the recess, the sectionsbeing formed respectively on their opposing faces with lengthwise slots and with projections for entering the slots, a switch located in the recess and including a key having a shank extending transversely through the slots at the inner ends thereof provided with a slot opening inwardly fromits face opposed to the other section, and

terminating in a hearing at its inner end, a switch located in'the recess and a. key shank journaled in the bearing, the section serving as a closure having a projection for entering the slot and holding the shank in the bearing, substantially as and for the purpose described.

" 3. Inan, incandescent electric lamp socket,

a lamp receiving shell, a base of insulation to which the base of the shell is attached, a Wire terminal carried by the base of in- .sulation, a switch member arranged within the base of insulation to make and break contact with the wire terminal and the lamp receiving shell, said member comprising a strip of resilient material bent to form substantially parallel arms extending'transversely of the axis, of the socket with their free ends normally out of contact with the wire terminal and the lamp receiving shell respectively, the intermediate part of the strip being pressed together and extending upwardly at an angle to said arms and being secured to the top of the base of insulation, and a cam operating between the arms for pressing the same in contact with the wire terminal and the shell, substantially as and for the purpose set forth.

4. A switch member for an incandescent electric lamp socket comprising a strip of resilient material bent to form substantially parallel arms spaced apart, the intermediate part of the strip being pressed together to form a lug at one end of the member-for receiving an attaching device, and the free end of one of said arms having a continuation extendingtoward the other arm and terminating in an a-ngularlv projecting part, substantially as and for the purpose specifled.

5. A switch member for an incandescent electric lam socket comprising a strip of resilient material bent to form substantially parallel arms spaced apart, the intermediate part. of the strip being pressed together to form a lug'at one end of the member for receiving an attaching device, the free ends of said arms having continuations extending in the same general direction and terminating in angularlv disposed parts projecting in opposite directions, substantially as and for the purpose set forth.

6. A switch member formed ofa single pieceflof resilient material and comprising main portions spaced apart for' accommodating an operating cam, the free ends of said main portions having continuations extending perpendicular to the main portions and in parallelism therewitln and the opposite ends of said main portions having continuations extending substantially perpendicular thereto and in contact with each other, and terminating in portions disposed in parallel relation to the main portions and extending in the direction of the free endsv thereof and providing an attaching lug, sub stantially as and for the purpose described.

7. In an incandescent electric lamp socket, a base of insulation having a recess, or chamber, extending transversely thereof, and a passage leading from one end of the same through thefront face of the base, a wire terminal member located at the rear of the chamber at the end thereof from which the 'rassage leads, a sleeve terminal secured to the outer face of the base and having a part exposed through the passage, :1 switch member in the chamber having arms extending perpendicular to the axis of the base and having frecendr: cooperating, respectively, with the wire terminal and said part of the sleeve terminal, the opposite ends of said arms being arranged in juxtaposition. means for securing the same to the rear wall of the chanilrer adpicent the end thereof 0 oosite to tha first-named and a :kev cam located in the chamber between the arms for operating the same, substantially as and for the purpose specified.

8. In a lamp socket, a section of insulation havinga recess thereinopcning through one end thereof, aswitclncam operating in said recess, a switch carried by said section cated in cooperative relation with said passage-way, substantially as and for the purpose set forth.

9. In a lamp socket,the combination with a base of insulation having a transverse recess with a part opening through its end, a key cam mounted in the recess substantially centrally between opposite ends thereof, a switch secured to the bottom of the recess adjacent one end. of the same and including two resilient arms having substantially parallcl portions extending toward the other end of the recess, and one located between the cam and the bottom wall of the recess, and the other onthe opposite side of the cam, a wireterminal secured to the base adjacent said opposite end of the recess and in coiiperative relation with the end portion of the first-named arm, and a lamp terminal shell supported on the base and having a part exposed adjacent the last-named end of the recess and in cotiperative relation with the secondarm of the switch, substantially as and for the purpose specified.

10, In an incandescent electric lamp socket,

a base having a recess,or chamber, extending transversely the-rethrough, and a. pas sagewa'y leading from one end of the recess to the front face of the base, said base having at the opposite side and C] d of the recess surfaces disposed at right mgles to each other, a wire terminal having a part arranged contiguous the rear wall of the recess at the first-named end thereof, a lamp terminal shell mounted on the face of the base and having a part exposed through the passage, a switch member having corresponding end portions in contact and of angular formation. said member of angular formation abutting against said surfaces disposed at right angles to each other, a screw for holding said part of angular formation against, said surfaces disposed at right angles to each other, said switch member having parallel resilient arms spaced apart and extending in a direction perpendicular to 'the axis of the base, one of said arms having its free end portion bent toward the other aaae lae arm, and its eXtremity extending outwardly for cotiperating with said Wire terminal and the free end of the other arm being bent baekwardly in a position to entersaid passage and engage the portion of the shell terminal exposed therethrough, and an operating member having a part located in the recess between the two arms, and another partaccesslble exterlorly of the base, sub- ).0 s'tantially as and for the purpose described.

in testimony whereof, 1' have hereunto signed my name in the presence of two attesting wltnesses, at Syracuse, in thecounty of Onondaga, in the State of New York this 19th day of June, 1911.

CARL H. .BISSELL. Witnesses:

M. E. E/LHZ'HAE, WM. CORNEL RLANDING. 

